福建中立恒自动化设备有限公司
目前,世界上有200多个厂家生产可编程序控制器产品,厂家有德国的西门子,美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙,法国的施耐德等。
可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面:
(1)向小型化、专用化、低成本方向发展
20世纪80年代初,小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展,新型器件大幅度的提高功能和降低价格,使PLC结构更为紧凑,功能不断增加,将原来大、中型PLC才有的功能移植到小型PLC上,如模拟量处理、数据通讯和复杂的功能指令等,但价格不断下降,真正成为继电器控制系统的替代产品。
(2)向大容量,高速度方向发展
大型PLC采用多微处理器系统,有的采用32位微处理器,可同时进行多任务操作,处理速度提高,特别是增强了过程控制和数据处理的功能。另外,存储容量大大增加。
(3)与计算机联系密切
从功能上看,PLC不仅能完成逻辑运算,且计算机的复杂运算功能在PLC中也进一步得到利用,从结构上看,计算机的硬件和技术越来越多地应用到PLC;从语言上看,PLC己不再是单纯用梯形图语言,而且可用多种语言编程,如类似计算机汇编语言的语句表,甚至可直接由计算机语言编程;在通讯方面,PLC与计算机可直接相连并进行信息传递。
(4)发展多样化
可编程序控制器发展的多样化体现在3个方面:产品类型、编程语言和应用领域。
(5)模块化
PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态,这使得PLC的系统功能进一步增强,控制系统设计进一步简化。
(6)网络与通讯能力增强
计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强,使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性,致使网络的应用有普遍化的趋势。
(7)多样化与标准化
生产PLC产品的各厂家都在大力度地开发自己的新产品,以求占据市场的更大份额。因此产品向多样化方向发展,出现了欧、美、日多种流派。与此同时,为了推动技术标准化的进程。一些国际性组织,如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准,如对各种类型的产品作一定的归纳或定义,或对PLC未来的发展制定一种方向或框架。
(8)工业软件发展迅速
与可编程序控制器硬件技术的发展相适应,工业软件的发展非常迅速,它使系统应用更加简单易行,大大方便了PLC系统的开发人员和操作使用人员。
可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分:一是与被控设备相连接的接口电路,另一部分是输出的映像寄存器。
PLC运行时CPU从输入映像寄存器读取输入信息并进行处理,将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成,输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出,以驱动电磁阀、接触器、指示灯等被控设备的执行元件。
以下链接皆有货
Parker 330 9110 097 Speed Pump 10 08 13789
Rexroth Dbds 10 G1a/315p260 Overflow Valve Mnr: R901194874
Sea Tel 122937-1 Rev P Level Cage Assy Bottom Exit 080 Pitch 119517-2J Rev L
Starrett 657 Magnetic Base and Post Assembly w/ 25-131J Indicator w/Case
NIPPON LINIAX POT-3 PRESSURE TRANSMITTER
NIPPON LINIAX Compact Pressure Transmitter POT-3 0~ 200 Kpa 4..20Ma DC24V 1/4"
TERASAKI ESM-103 B STARTER MODULE PCB CARD K/87Z/4/001B
CONTROL PRODUCTS INC BUNN-0-MATIC 07074 PCB
Valmet DMU 2 PCB Module 545142-3A DM
VALMET BIU4 M851221 Binary Input Module METSO Automation
ABB MG2168C FOR HD4/C-12-06-25 Shunt Opening Release SUPPLY 24DC
EMERSON Process Management - MAS 2600 Transducer Amplifier - WL202 94V-0
Salvajor AS82085
Bürkert 00001490 Flow Valve
Rexroth h-2-ex controlair valve
Lanng stelman 1338-002 master mk ii 1338-002
HENGSTLER 0525 121 INCREMENTAL ENCODER WITH 10M CABLE 10-30VDC
Danfoss CVP-L, Constant-pressure Pilot Valve - 027B0920
Whitlock 000506 LED Dnft Digital No Flow Timer 240v-dc
Intrinsically Safe Temperature Meter - Ex-MP4 a
Aoip RD6B Resistor Decade
PRERECHARGE KIT FOR PARKER 2711120-07-02
Mayhew PL350US Hollow Punches Set 66002
Siemens QRI2A2.B180B Burner Infrared Flame Detector Flame Sensor
Hart 275 Field Communicator Fisher Rosemount System For Hart Transducer Setting
VITRAN 570T27G-0-300-CAD
GAST MOA-P101-CD Air Compressor / Vacuum Pump
QK-652-C JIANGSU YUANWANG Float Level Controller
Posital Fraba AGS015-2-CA1-H0-P8M Inclinometer
Bender RK170 Measuring Transducer
PepperlFuchs LB 2103 E Digital Output Module
PepperlFuchs LB 2103 G Digital Output Module
Saginomiya DS-GK-12001 PCB
LEM DK 100 B420 Split Core Current Transducer
WABCO Westinghouse 345 904 318 2
BARKSDALE MODEL 9692X-2CC-1 9692X SERIES FLAMEPROOF PRESSURE SWITCH
Jrm 50wx2 250ohm x2 potentiometer
AKRON - 4826 Nozzle with Pistol Grip
EE Elektronik Humidity Temperature Transmitter EE21-FT6A26/E01-T83
Carlo Gavazzi 5100536 Pcb Card
mechanical petrol truck fuel meter LS212 11
MURPHY SPEED SWITCH --- MODEL SS300-12 Part No - 20700166
AKO WASCATOR WASHER TIMER 514-307-03 438897802
Deif FAS-113DG Generator Set Synchronizer Relay 110VAC
UTRONICA BZ32 ZENER BARRIER UNIT
Toa Valve Engineering S1627L Full Bore Safety Valve
Swaco Front Disc Assembly 94-36-090 32.0 HRc 91.9 Hra 10CDF-4081
Swaco Back Disc Assembly 96-11-215 REV.F 10CDS-4013/ 92.0 HRA 31 HRC
LaMOT Corporation 1/4"STD(AA) Rupture pressure 18000 PSIG 72F 8439601
Sanyo denki d8g-516 dc geared motor
FS-100 Flame Detector Power Supply 100/110V 50/60Hz
Valcan Hart M481 125/250 VAC 70131801 15 MIN
Thomas Magnete exPPCD06 8560105 TUV 07 ATEX 7425X Valve 20 Bar
Hydac 44HV-5000-1-PP-004 Electronic Pressure Switch
Musasino MEW-121 PCB Card
COOPER MEDC XB11 BAS99ATEX2195X 110AC
HEISHIN PUMP WORKS CO LTD HMS-200 - PARTS- OIL LEVEL PROBE 101393R0 - Coalescer-
Huisman Position Switch EAR99(NLR)
Parker 330 9110 097 Gear Pump 10 08 13789
Wandfluh AD4Z60A-Z449 Directional Valve
Atos RZMA-A-010/180/PA-M/24 Prop Pressure Valve M0ZAA-221100-10F/PA-M/24
Hansun Marine MCU Control Card (Ver 1.2) Thank you for being our valuable
SOLO 517-001-257 Cordless Heat Detector Tester
HCS DMA-22-01-130-X-SHAWE 5 004 150 00 Digital Module Amplifier
Ingersoll Rand ARO LM2203A-1G-C Air-Operated Oil Pump - 150 PSI
MSA 300 BAR SCBA Carbon Composite Breathing Air Cylinder
Valmet damatic M851565 keyboard
Versa VSG-4532-MS1-XX-A120 Solenoid valve 40-175 psi max. 120V 60Hz
Teck Skotselv Temperature sensor Witransmitter 5335B PT-100 Class B
HEIDOLPH MAGNETIC STIRRER MR 3000 AC 230V 50/60Hz
ABB Stromberg FDC86-UNIT2 Floppy Drive Unit 5761726-8A
Trafag 8442.22.4636 Engine Pressure Transmitter CAT-Nr 116kPa
Jumo 404366/000 Pressure Transmitter -0.....4 bar 43006501
Ocean Vision Pte Ltd. 900100 Underwater lamp 120V 250W
GHM-Honsberg FF-015RMS-125 Flusso Interruttore 230VAC/1A/50VA -20 100 ℃
MEDC XB11 Xenon Explosionproof Beacon Strobe Light Red
MEDC SM87 HXB 5 Joule Ex Xenon Faro Gamma #2
B Hepworth Co. Ltd 90077502 Wiper Motor 220 VDC
B1S-S48SS-L6 PRESSURE ADJUSTMENT
Nozzle Boride S N 159-550 p
Feingeratebau K. Fischer GmbH Type 207M Analog Barograph
ECOLAB LM-3000 Machine Interface Module LM-4000 X-MASTER CONTROLLER CE UN
SABROE 1896 856-A Refrigeration Parts Coupling Set/ Oil pump
Cat Mak CLS-50 500156
Leser 4373.2624 Pressure Limiting Valve
CMR KOREA AT-30N-4 PCB Board
R978726623 CALVE ASSEMBLY CANTROL TYPE "N"
HEISHIN PUMP WORKS CO LTD HMS-200 - PARTS- OIL LEVEL PROBE 101393R0 - Coalescer
Barksdale Model 9692X-2CC-1 9692X Series Pressure Resistant Pressure Switch
LEM Dk 100 B420 Split Core Power Converter
R978726623 Kalben Montage Cantrol Typ N
Sea Tel 122937-1 Rev P Level Käfig Assy Unten Ausfahrt 080 Pitch 119517-2J Rev L
CMR Korea AT-30N-4 PCB
Stallion 0525 121 Incremental Encoder With 10M Cable 10-30VDC
Danfoss CVP-L, Continuous Pressure Pilot Valve - 027B0920
Kendrion 32 17350E20 Rectifier
Osakidengyosha HD-110M3 Rectifier Power Module
Hydac EDS 44HV-5000-1-PP-004 Electronic Pressure Switch
Hardy HI 2201LT Loop Operated Level Weight Transmitter For Hazardous Areas
Hansun Marine Mcu Control Card (Ver 1.2) Thank You For His Our Valuable
Trafag 8442.22.4636 Engine Pressure Transmitter Cat No 116kPa
Barksdale Series 9692X-2CC-1-S0994 Explosion Proof Compact Switch 100-750 Psig
GHM-Honsberg FF-015RMS-125 Flusso Interruttore 230VAC/1A/50VA -20 100°C
Ocean Vision Pte Ltd.900100 Underwater Lamp 120V 250W
B Hepworth Co.Ltd 90077502 Wiper Motor 220Vdc
Suco 0165-45114-1-001 Piston Pressure Switch 250V
HYDAC VD5C.0 TA ELECTRIC CLOGGING INDICATOR OPERATING PRESSURE 450 ROD
Feingeratebau K. Fischer GmbH Type 207M Analogue Barograph
Starrett 657 Magnetic Base And Post Mount W/25-131J Indicator W/ Protective Case
NIPPON LINIAX Compact Pressure Transmitter POT-30~200Kpa 4 20Ma DC24V 0.6cm
Emerson Processor Management - MAS 2600 Converter Amplifier - WL202 94V-0
Murphy Speed Switch Model SS300-12 P/N - 20700166
AKO WASCATOR Disc Timer 514-307-03 438897802
Huisman Position Switch EAR99 (Nlr)
Pepperl Fuch LB2101A Digital Power - 541940
Sabroe 1896 856-A Refrigeration Parts Clutch Kit / Oil Pump
ABB MG2168C For HD4/C-12-06-25 Shunt Opening Releaseer 24DC
SOLO 517-001-257 Wireless Heat Detector Tester
ECOLAB LM-3000 Machine Interface Module LM-4000 X-Master Control - Ce Un
Lang Stelman 1338-002 Master Mk II 1338-002
PepperlFuchs LB 2103G Digital Power Module
Pepperlfuchs LB 2103 E Digital Power Module
Mayhew PL350US Hollow Die Set 66002
Prerecharge Set for Parker 2711120-07-02
Hart 275 Field Communicator Fisher Rosemount System For Converter Setting
Jumo 404366/000 Pressure Transmitter -0 4 bar 43006501
Unitor UCT-500 Combination Torch Master Kit
ASCO TRI-POINT T 488865 SA12D PRESSURE AND TEMPERATURE SWITCH
HYDAC HDA 4745-A-400-000 Pressure Transmitter 906393 400 Rod
Parker 73212BN63N00N0C111P3 Solenoid Valve
HYDAC HDA 4745-A-400-000 PRESSURE TRANSMITTER 906393 400 BAR
Hernis Scan System A/S RX206 Hs057b REV.C Control Board PCB CCTV